/**
 * 消息框全局调用
 */
 
    import {createApp} from "vue";
    import MyMessageBox from "./MyMessageBox.vue";
     
    export default (msg) =>{
        const dom = document.createElement("div"); //创建消息框容器
        document.body.appendChild(dom); //容器放入当前的页面
        const app = createApp(MyMessageBox); //创建Vue实例
        const instance = app.mount(dom);
        instance.show(msg);
        //3秒后关闭
        setTimeout(()=>{
            dom.remove();
            app.unmount();
        }, 3000);
    }